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Table 2 The demographic characteristics comparisons between different types of headaches and non-headache participants

From: Prevalence of primary headache disorders among information technology staff in China: the negative effects of computer use and other correlative factors

VariableAll headache (%)Migraine (%)TTH (%)Unclassified headache (%)
Gender
 Male396 (25.6)81 (5.2)297 (19.2)18 (1.2)
 Female223 (47.7)71 (15.2)143 (30.6)9 (1.9)
P< 0.001< 0.001< 0.0010.2123
Age (years)
 18–30173 (24.6)41 (5.8)128 (18.2)4 (0.5)
 31–40257 (35.8)63 (8.8)188 (26.2)6 (0.8)
 41–50129 (33.5)34 (8.8)87 (17.9)8 (2.0)
 51–6060 (29.0)14 (6.8)37 (17.9)9 (4.3)
P< 0.0010.13470.0047< 0.001
Marital status
 married409 (29.3)103 (5.2)281 (20.1)25 (1.8)
 single210 (34.4)49 (8.0)159 (26.1)2 (0.3)
P< 0.001< 0.001< 0.001< 0.001
BMI
  < 24158/724 (21.8)46 (6.4)110 (15.2)2 (0.3)
 25–28287/874 (32.8)69 (7.9)205 (23.5)13 (1.5)
  > 28174/414 (42.0)37 (8.9)125 (30.2)12 (2.9)
P< 0.0010.0557< 0.0010.0002
Education
 Bachelor or lower292/1097 (26.6)71 (6.5)206 (18.8)15 (1.4)
 Master or higher327/915 (35.7)81/915 (8.9)234 (25.6)12 (1.3)
P< 0.0010.04420.00020.9136
Computer work
  < 8 (hours)105/408 (25.7)29 (7.1)69 (14.7)7 (1.7)
 8–12 (hours)224/729 (30.7)55 (7.5)158 (21.7)11 (1.5)
  > 12 (hours)290/875 (33.1)68 (7.8)213 (24.3)9 (1.0)
P0.02780.68420.01100.5398
Job category
 Software Engineer241/776 (31.1)63 (8.1)169 (21.8)9 (1.2)
 Application Engineer266/858 (31.0)61 (7.1)192 (22.4)13 (1.5)
 Managerial112/378 (29.6)28 (7.4)79 (27.4)5 (1.3)
P0.81760.73770.84300.8229